Weather-strip.



No. 673,333. Patented Apr. 30,` 19m. J. M. Bvmzus.

WETHER' STBIP.

(Application flled Dee. 80, 1899.)

(lo Iodel.)

UNITED STATES PATENT OFFICE.

JOHN MRRY BYRENS, OF VANCOUVER, OANADA, ASSIGNOR OF TWO- THIRDS TOGEORGE E. DREW AND THOMAS R. PEARSON, OF NEV VVESTMINSTER, CANADA.

WEATHER-STRIP.

SPECIFICATION forming part ,of Letters Patent No. 673,333, dated April30, 1901.

Application filed December 30, 1899. Serial No. 742,147. (No model.)

T0 a/ZZ witam it mol/y concer'n:

Be it known that I, JOHN MURRAY BYRENs, a subject of Her Majesty theQueen of Great Britain, residing at the city of Vancouver, in theProvince of British Columbia, in the Dominion of Canada, have inventedcertain new and useful Im provements in Weather-Strips, (forwhich I haveobtained a patent inI` the Dominion of Canada, No. 65,010, bearing dateNovember 20, A. D. 1899,) of which the following is a specification. i

This invention relates to improvements in lnetallic window-stripsdesigned for preventing drafts, dust, and moisture entering between thesashes and the window-casing; and`` it primarily seeks to provide a verysimple and inexpensive strip of the character stated which can beconveniently secured to the edges of the sashes without requiring anyspecial Shaping of the same and which will not interfere With theordinary adj ustment of the sash-cords or the use thereof.

My invention comprehends in its make-up a metal strip, preferablySheet-zinc, of a shape and size to lie flat against 'the edges of thesash to form slide-surfaces and having a specially-formedlongitudinally-extending and inwardly-projecting fiangeor rib having,primarily, for its pnrpose to produce a cut-off for preventing ingressof air, dust, or moisture between the sash-edges and the metal strip,and, secondarily, foi` providing means Whereby the strip can readilygive or buckle inwardly in case of swelling of the sash or thecasing-stiles to overcome binding or excessive friction between theseveral parts.

This invention consists in the detailed construction and novelcombination of parts hereinafter first' described, and specificallypointed out in the appended claims, reference being had to theaccompanying drawings, in which- Figure 1 is a perspective view of aportion of a window-casing and a sash with my improvement applied. Fig.2 is a horizontal section of the window-casing and the sashes with myimprovement in position. Fig. 8 is an enlarged detail horizontal sectionillustrating the manner in which the strip bends or buckles back whensash tends to bind tightly against the casing, and Fig. 4 is a detailview of a portion of one of the strips.

Referring to the accompanying drawings, in which like charactersindicatelike parts in all the figures, 1 designates the window-casing; 2, thepulley-stiles; 3, the stops, and 4 the parting-strips, which form partof the said casing.

4 4a designate the top and bottom sashes, which have the usual rabbets4b 11 in their edges, all of said parts being of the conventionalconstruction.

5 designates a strip of Sheet metal, preferably zinc, and of a widthequal that of the edge of the sash, it being, however, obvious that itmay be of less width than the sash edge, if desired.

The rabbets 11, it will be noticed, have parallel opposite edges thatextend inwardly at right angles to the 'running edge of the sash.

Each strip 5 has an inwardly-projecting rib 5a, that extends the fulllength thereof, and the said rib is formed by pressing the strip bystamping-dies or rib-forming mechanism, and the said ribs comprise astraight or right-angle portion 5x, which is disposed in such manner asto face toward the outside of the sash, and the terminal of said portion5x merges with an outwardly and forwardly extending angle-facey, ofapproxima'tely thirty degrees, which merges with the body part proper ofthe strip at the point indicated by z, which point z is, however, spacedfrom the point z', Where the angle portion begins, a distance slightlygreater than that between the parallel edges of the rabbets 4b, thereason for which will presently appear.

The right-angled portion 5x when the strip 5 is fitted in place singlyengages the adjacent face of the rabbet, to which position it ispractically held air-tight by the external pressure on the strip, which,being in the direction indicated by the arrow 10 in Fig. 3, is deflectedin the direction of the arrow 11 by the sloping portion y engaging theouter edge of the opposite straight side of therabbet. This providesfora practically air-tight joint.

Metallic strips having ]-shaped 'ribs have heretofore been provided; butmy form of IOO strip differentiates therefrom on the following lines: Byreason of having the front face of the rib beveled and extended slightlybeyond its adjaoent rabbet edge pressure against the strip in onedirection will be transmitted praetically at right angles thereto andcause the fiat side of rib to make a more tight olosure than is possibleby direct pressure only. Again, ample space is 'provided on the insideof the rabbet baokof the metal rib portion for the proper play of thesash-eord. Again, an air-space is provided that extends up the entirelength of the sash edge in front of the flat edge of rib, whioh willeffeetively break up any draft that might be drawn in from outside, and,furthermore, by reason of the points z z' of the ribs being separatedand the edges of the strip sorewed fast, as shown, the central part ofthe strip will have a slightly-bulged (see Fig. 3) position, and therebybe under suffioient spring to maintaina'proper contact with theslideways, and v i 5x, and merging with the fiat part of'the strip,

While I have not so shown it, i-t Will be uni derstood the top andbottom edges of the 1 sashes may also be provided With the ribbed andfor the purposes desoribed.

thereby keep sashes from rattling.

strips.

Having thus desoribed myinvention, What f I olaim, and desire to secureby Letters Pat- I ent, is- L 1. `Asa new and improved artiole,a Weatherfstrip, eonsisting of a Sheet-metal strip adapted to be made fast to thesash edge, said strip having a longitudinally-extendinginwardlyprojecting rib, said rib having one side projeeted inwardly atright angles to the body part, whereby to lie flat against the one edgeof the sash-rabbet, its other member being on a plane extending from theinner end of the right-angle side to a `point beyond the outer edge ofthe opposing rabbet-surfaoe, all being arranged substantially as shownand desoribed.

2. The combination with the sash having a rabbet 4b, whose oppositesides extend parallel and inwardly at right angles to the outer edge ofthe sash of the member 5, consisting of a Sheet-metal strip, the edgesof which are adapted to lie flat upon and to be made fast to the stileedge of the sash, said strip having a longitudinally-extending andinwardlyprojeoting rib 5, formed with a right-angle portion 5x, adaptedto seat against one edge of the sash-rabbet and with an angle portion5Y, beginning at the inner'end of the portion said rib at. the outermostpoint being of a width in exoess of the width of the sashrabbet, allbeing arranged substantially as shown Dated at New Westminster, Canada,this 18th day of December, A. D. 1899.

JOHN MURRAY BYRENS. Witnesses:

GoRDoN E. CoRBoULD, J osErH R. GRANT.

